I didn't do it yet, but I have a new problem. Actually, two new problems since I reflashed this rom.
I did not restore data, as a whole, but I did restore a few apps with data, like Angry Birds to keep my scores/progress and Dolphin browser for my bookmarks. If I didn't need data, I downloaded clean from the market. Okay, now that that's out of the way..
Since I reflashed, I have to manually close apps that would normally have closed themselves (the way froyo does it). Now, if I've been on FB, in the browser, in a game, in Handcent, etc, if I got to Task Manager, they are all still running and I have to close them individually, just like the old way on Eclair. Not always, but at least 50% of the time. I think this is part of why my battery life has sucked even worse since this reflash..
And this one is super annoying. You know how media volume isn't linked to ringer volume? So if you turn your phone to silent, "media volume" is still whatever you left it on? Okay...well, I stream my music via bluetooth to my truck's sync. When I get home, I shut truck off and get out, and this automatically pauses DoubleTwist..I don't have to tell it to. (and I go ahead and shut off bluetooth at the same time to save battery). Well, at random after having done this, my phone will just start playing the last song I was on! VERY LOUD since I turn media volume all the way up when I stream bluetooth. What's even weirder is that DoubleTwist does not show up as a running program in Task Manager, AND, if I go into DoubleTwist, it still shows the song is paused! So I have to hit play to even see the pause button to shut it up (because I can't force close it in task manager since it's not there!)
Seriously...that one is weird. And truly annoying, especially when you're on your sofa, deep into a movie, and your phone starts blaring S&M. lol
Edit, on that note, even worse..this could happen in a movie theater. I generally don't even take my phone in, but on occasion I do out of habit.